Blueberry maggot (Rhagoletis mendax) is an insect pest. It was first detected in New Hampshire in 1985.

Rhagoletis mendax is a tephritid fly and is a major pest of blueberry crops in the eastern and southern United States and eastern Canada. It attacks several species of blueberry and related plants. The adult female fly lays a single egg in a blueberry, and when the larva hatches it consumes the fruit.
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